What is the definition of a subpoena?

A subpoena is defined as a document that orders an individual to appear in court or produce evidence relevant to a legal proceeding. This legal tool is crucial in the judicial system as it ensures that witnesses can be compelled to provide testimony or that documents can be obtained from individuals or organizations, thereby aiding in the gathering of evidence necessary for a case.

The other options do not accurately capture the essence of what a subpoena is. A subpoena does not initiate criminal charges, nor does it serve as a summons for jury duty or a request for a change of venue. Instead, it specifically focuses on compelling attendance or the production of evidence, making it an essential component in the pursuit of justice within the legal framework.